Neco 2017 Chemistry Question 2

Practice essay / theory question 2 from the 2017 Neco Chemistry examination. This question covers Periodic Table .

Neco 2017 Chemistry Essay / Theory

Topic: Periodic Table

Question 2 NECO • 2017 • CHEMISTRY • essay

The diagram presents a segment of the periodic table showing period 3 elements (Na to Ar) with their atomic numbers and symbols.

( a )

State the group number and family name of sulphur (S).

( b )

Arrange the elements Na, Mg, Al, Si, P, S, Cl in order of increasing first ionisation energy and give a concise explanation for the observed trend.

( c )

Write the ground‑state electron configurations for magnesium (Mg) and phosphorus (P).

( d )

Explain why chlorine readily forms a –1 ion whereas sodium readily forms a +1 ion.

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This is Neco 2017 Chemistry Question 2. It is one of the essay questions from the 2017 Neco Chemistry examination.

The question covers Periodic Table .

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